The common causes of jaw pain are mainly the following: First, the patient has malignant tumor in the jaw with oral cavity, which will cause obvious pain symptoms as the tumor cells proliferate and invade the local nerves and tissues. At this time, patients need to improve the CT examination as soon as possible to clarify the size of the oral malignant tumor, and perform the removal of the malignant tumor as soon as possible, combined with local radiotherapy and systemic chemotherapy to kill the tumor cells in the body after surgery, so as to relieve the symptoms of jaw pain. Second, pain caused by local tooth infection in the jaw. In this case, patients can take oral metronidazole tablets to control the infection in the mouth to reduce the pain symptoms. If the tooth infection is heavy with abscess formation, the jaw teeth should be extracted, the wound should be compressed to stop bleeding, and the anti-infection treatment should be strengthened, and the jaw pain symptoms can be relieved sooner after the local infection is controlled.